<!DOCTYPE HTML>
<title>Fonts and margins of HTML headers</title>
<style type="text/css">

div { border: medium solid blue }

</style>

<div><h1>Level 1</h1></div>
<div><h2>Level 2</h2></div>
<div><h3>Level 3</h3></div>
<div><h4>Level 4</h4></div>
<div><h5>Level 5</h5></div>
<div><h6>Level 6</h6></div>
